Bear “Customer first, Excellent first” in mind, we work closely with our shoppers and supply them with efficient and specialist services for Manufacturing Companies for Baoji Pure Tantalum Per Kg, The principle of our organization would be to offer high-quality solutions, professional support, and honest communication. Welcome all good friends to place trial purchase for developing a long-term company relationship.
Bear “Customer first, Excellent first” in mind, we work closely with our shoppers and supply them with efficient and specialist services for Baoji Oyuan Metal-tech Co., Ltd., Tantalum Bar/Rod, On today, we’ve got customers from all over the world, including USA, Russia, Spain, Italy, Singapore, Malaysia, Thailand, Poland, Iran and Iraq. The mission of our company is to supply the highest quality merchandise with best price. We have been looking forward to doing business with you.
Chemical composition:
| Main and minor components | Min.content(%) | ASTM B365 |
| Ta | 99.95 | balance |
| Impurities | Max.values (μg/g) | Max.values (μg/g) |
| Fe | 100 | 100 |
| Mo | 100 | 200 |
| Nb | 400 | 1000 |
| Ni | 50 | 100 |
| Si | 50 | 50 |
| Ti | 50 | 100 |
| W | 100 | 500 |
| C | 30 | 200 |
| H | 15 | 15 |
| N | 50 | 100 |
| O | 100 | 250 |
| Cd | 10 | - |
| Hg | 1 | - |
| Pb | 10 | - |
Diameter and tolerance
| Diameter (mm) | Diameter tolerance (mm) |
| Ground | |
| 3.00-15.9 | ±0.05 |
| 16.0-24.9 | ±0.10 |
| 25.0-34.9 | ±0.25 |
| 35.0-39.9 | ±0.40 |
| 40.0-50.0 | ±0.80 |
| Cleaned | |
| 3.00-4.74 | ±0.076 |
| 4.75-9.51 | ±0.102 |
| 9.52-12.69 | ±0.127 |
| 12.70-15.87 | ±0.178 |
| 15.88-19.04 | ±0.203 |
| 19.05-25.39 | ±0.254 |
| 25.40-38.09 | ±0.381 |
| 38.10-50.79 | ±0.508 |
| 50.80-63.49 | ±0.762 |
| 63.50-120.0 | ±1.50 |
| Turned | |
| 30.0-49.9 | ±0.30 |
| 50.0-120.0 | ±0.40 |
Length and straightness:
| Diameter (mm) | Production length (mm) | Stiraightness/Meter (mm) | |
| Cleaned | Ground/turned | ||
| 3.00-9.90 | ＞500 | ＜2.5 | ＜2.0 |
| 10.0-120.0 | ＞300 | ＜2.5 | ＜1.5 |
Length tolerance:
| Nominal length (mm) | 6-30 | 30-120 | 120-400 | 400-1000 | 1000-2000 | ＞2000 |
| Length tolerance(mm) | ±1.0 | ±1.5 | ±2.5 | ±4.0 | ±6.0 | ±8.0 |
Density: ≥16.6g/cm³
Nondestructive testing: For diameters＞15.00 mm:100% ultrasonic testing; For diameters of 0.50-50.0mm: Eddy curent tests on rods with ground surface.
| Diameter(mm) | Tensile strength(MPa) | 0.2% Yield Strength (MPa) | Elongation(%) |
| 3.00-3.19 | ≥207 | - | ≥20 |
| 3.20-63.5 | ≥172 | ≥103 | ≥25 |
Surface condition:
| Surface | Pickled | Ground | Turned |
| φ3.0-165.0mm | φ3.0-50.00mm | φ≥30.00mm | |
| Roughness | Diameter (mm) | Ra (μm) Ground | Ra (μm) Turned |
| 3.0-50.0 | ≤1.20 | - | |
| ≥30.0 | - | ≤3.2 |